Means for stropping blades



Oct. 14, 1930. H. J. GAISMAN MEANS FOR STROPPING BLADES Filed Nov 14, 1925 INVENTOR Henry j m'smam' a gfimmq.

ATTORNEY Z a WW 1 w Patented Oct. 14, "193 PATENT OFFICE HENRY J. GAISMAN, OE YORK, N. .Y., ASSIGNOR TO AUTOSTROP PATENTS COR- PORATION, OF DOVER, DELAWARE, A CORPORATION OF DELAWARE MEANS FOR srnorrmeBLAnEs 'Originalapplication hled January 31,1923, Serial No. 616,006. Divided and this application filed d November 14, 1925. Serial No. 68,974.

This application is a division of my application filed January 31, 1923,. Serial. No. 616,006, for razor stropping means.

My invention has reference to means for stropping the cutting edges of razor blades 7 and particularly of the class in which a frame carrying a rockable blade holder is reciprocated along a strep. V V

One ofthe objects of my invention is to provide simple and effective means to cause the blade edge to be moved free from the strep upon. the initiationof reverse direction of movement of the. machine along the strep to" reverse the-position of the blade respecting the strep, so that the blade edge will be out of contact with the strep when the frame starts to travel in such direction along the strep, whereby to prevent the blade from injuring or cutting the strep.

. I have illustrated my invention as embodied in the type of stropping machine set forth in United States Letters Patent granted to me under date of Dec. 7, 1915, No.

"of the stropping means with theactuating T handle so arranged that when the device is moved along a strop the initial action will be to cause the frame to tilt with respect to the strep to cause theblade edge to rise from the strep before the frame starts to slide along the strep tocause the bladeto be reversed in position for stropping. In the a class of razors referred to a guard for the blade edge isv movably supported with respect to the frame so that lugs or hooks upon the guard engage or disengage the blade edge as required for shaving or stropping purposes. I have illustrated my invention embodied in such a safety razor wherein I provide means .wherebythe guard will cooperate with the handle,'when the guard secures the blade in shaving position, to retain the frame and handle in firm or immovable relation so that the blade and guard will be correspondingly retained in cooperation, and whereby when the guard is released from the blade the guard will also be released from the handle to permit the frame and handle to have relative motion for stropping.

'My invention comprises novel details of improvement that will be more fully hereinafter set forth and then pointed out in the claims.

Reference is to be had to the accompanying drawings forming a part hereof, wherein Fig.1 is a side view illustrating my improvements as embodied in a safety razor provided with stropping means;

Fig. 2 is a' partly broken plan view of Fi 1; a

Fig. 3 is a section on line 3, 3, in Fig. 2;

Fig. 4 is a partly broken underside view;

Fig. 5 is a section on line 5, 5, in Fig. 4;

Figs.'6 and 7 are detail cross-sections showing the parts in different stropping positions; and

Fig. 8 is a detail perspective view of one of the pivotal-members.

Similar numerals of reference indicate corresponding'parts in the several views.

The frame 1 is shown comprising a base 2 provided with spaced substantially parallel arms or uprights 3 at its ends in which spaced shafts 4, 5 are ionrnaled, a space being provided between shaft 4-. and base 2 for the passage of a suitable strep 6, all of which parts are well known in the art. The shaft 1 is provided with a gear 7 in mesh with a gear 8 on shaft 5 whereby contact of a taut strep against the under portion of shaft 4 or its encasing sleeve or tube at will cause rotation of shaft 5. The shaft 5 is provided with a suitable blade holder 9 adapted to detachably retain a blade 10. The blade holder illustrated is substantially the same as that shown in Letters Patentgranted to me April 9, 1912. No. 1,022,727.

At 11 is a handle that is pivotally connected with frame 1, being shown pivotally attached to the base 2. Said base is shown provided with a centrally disposed opening at 12 in Joe which is pivotally mounted a rockable. member 13, shown provided with projections 13 at its ends which serve as pivots for said memis connected to ine1nber13-by means of ahead 15 which is shown provided with a centrally disposed hub-like portion l5 that is internally threaded to receive the threaded end portion 11 of handle 11, the ends of head 15 ei ztendin g against and opposing the outer surfaces of the seats 1d, (Fig. 5) The member 13 and head 15 are secured'together to retain the pivotal projections 13 of member 13 r0 tatively in the seats 1 L Withthe end portions of head 15 bearing againstsaid seats. For such purpose the head 15 is shown provided with pins or projections 16 which enter holes 1'? in member 18 and'are riveted over against said member to retain the latter and the head 15 together, but in such a manner that said member and head may rock relatively to base 2 in a direction transverse to the length of said baseand along the strop. i v

'lVhen the stropping mechanism is to be used for stropping the s-trop -'6 is passed between base- 2 and shaft l, in a well known manner, andthe strop is heldtaut, whereupon the user grasps handle 11 to reciprocatefthe machine or razor along the strop. {Vhen the machine or razor is first pushed respecting the strop, as to the left in Fig. 6,-to reverse the position of the blade on thestrop, the frame will initiall tilt slightly toward the right in said figure, initially causing the blade/edge to rise from the strop before the frame slides on the strop, and during such sliding :to the left in said figure the blade will be reversed to drag on the strop, as indicated in Fig. 7. 'When the stroke described has been stopped and the machine or razor is to be moved toward the right in Fig; 7, the initial action will be to tilt the frame toward the left in said figure to cause the blade edge first-to rise from the strop, and continued movement of the ma chine along the strop in said direction will.

cause reversal of the blade to drag on the strop, and so on as the machine or razor is reciprocated along the strop. The initial raising of the blade edge from the strop, before the machine or razor slides on the strop, will have the beneficial effect of preventing the blade edge from injuring or cutting the strop by reason of the advance of the blade edge towardthe strep, which might occur in the event that the gears did not first cause the blade edge to move away from the strop when the machine or razor is reversed in its sliding directionalong the str'op.

p In the example of my invention illustrated as embodied in a safety razor a movable guard is indicated at 18 provided with-hooks or lugs 19 at its ends to engage the blade edge in a well known manner. The'guard I have illustrated is pivotally carried by frame 1 by means of lugs 20 depending from base 2 and corresponding lugs 21 att-he ends of the guard located adjacent to the lugs 20, rivets 22 through the corresponding pairs of lugs pivotally supportingthe guard upon the 2 frame. 'lhe guard is shown provided with a pro ect on23 having an opening 24' receiving the handle freel'y so that the guard maybe e w ,Th Pe e Qt re lecti n-23 xe guard serves as a finger piece to enable the guard to be rocked or moved ito engage'and release the blade; The partlcular construc tion of guard illustrated is substantially as that set forth in my application for Letters Patent for safety razor filed A ugustitl, 192:1,

Serial No. 493,532, although my present in for shaving purposes since the guardthen tending on the'side of the handle opposite the base 2 and the handle will be {firmly united will oppose rocking of member13with respect to frame 2. Whenthe razor is to be used for stropping and the guard is released from the blade for such purpose the projection 18 of the guard will move away from the part 13 of member 13 torelease the latter so that it may rock respecting base 2, as illustrated in 'Figs. 6 and 7. p 7 V 'My'improvements are simple in construction and effective inuse whether utilized in a machine for stropping razor blades as dis-- tin guished from, a safety razor, or when used in a safety razor having stropping means, whereby the blade may bestropped while in the frame without removing the blade therefrom. Y

Having now described my invention,what I claim is I 1. Means forstropping blades comprising a frame having a blade holder and means to rock the blade, the frame having a base provided with an opening, a member pivot'al ly located on one side of the base at the opening, a head attached to said member on the opposite sideof the base'at said opening with the frame between themember and the head to retain the frame rockabl-y between the member and ,head, and a handle attached to said headn I 2. Means for stroppi-ng bla descomprising a framehaving a blade holder and means to rock the blade, the base ofthe frame having an-openingand seats at oppositesides of the a handle attached to said head.

HENRY J. GAISMAN. 

